Why do I need to limit current under high concurrency?

Internet projects are different from traditional projects. Internet projects are exposed to the Internet and are aimed at all Internet users. At this time, the following two access forms may require us to take some necessary measures to protect our services.
1. High-frequency access by a large number of normal users causes server downtime
2. High-frequency access by malicious users causes server downtime
3. Web crawlers. For these situations, we need to limit user access.

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Origin blog.csdn.net/qq_43565087/article/details/106757285